TGS2602 datasheet(2/2 Pages) FIGARO

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PRODUCT INFORMATION

Structure and Dimensions:

Basic Measuring Circuit:

REV: 06/15

The sensor requires two voltage inputs:

heater voltage (VH) and circuit voltage

(VC). The heater voltage (VH) is applied

to the integrated heater in order to

maintain the sensing element at a

specific temperature which is optimal

for sensing. Circuit voltage (VC) is

appliedtoallowmeasurementofvoltage

(VOUT) across a load resistor (RL) which

is connected in series with the sensor.

DC voltage is required for the circuit

voltage since the sensor has a polarity.

A common power supply circuit can be

used for both VC and VH to fulfill the

sensor's electrical requirements. The

value of the load resistor (RL) should be

chosen to optimize the alarm threshold

value,keepingpowerconsumption(PS)

of the semiconductor below a limit of

15mW. Power consumption (PS) will be

highest when the value of Rs is equal

to RL on exposure to gas.

The value of power consumption (PS) can

be calculated by utilizing the following

formula:

PS =

Sensor resistance (Rs) is calculated with

a measured value of VOUT by using the

following formula:

Specifications:

(VC - VRL)2

Bottom view

Top view

Side view

ø9.2±0.2

7.8±0.5

10.0±1.0

3.6±0.1

Sensing

element

3.6±0.1

ø8.1±0.2

ø0.55±0.05

ø5.1

90˚

1.6

ø0.5 x 6

0.9 0.9

Pin connection:

1: Heater

2: Sensor electrode (-)

3: Sensor electrode (+)

4: Heater

All sensor characteristics shown in this brochure represent typical characteristics.Actual

characteristics vary from sensor to sensor. The only characteristics warranted are those

in the Specification table above.

u/m:mm

Model number

TGS2602-B00

Sensing principle

MOS type

Standard package

TO-5 metal can

Target gases

Air contaminants

(VOCs, ammonia, H2S, etc.)

Typical detection range

1 ~ 30ppm of EtOH

Standard circuit

conditions

Heater voltage

5.0±0.2V AC/DC

Circuit voltage

5.0±0.2V DC

Ps≤15mW

Load resistance

variable

0.45kΩ min.

Electrical

characteristics

under standard test

conditions

Heater resistance

approx 59Ω at room temp.

(typical)

Heater current

56±5mA

Heater power

consumption

280mW (typical)

Sensor resistance

10kΩ ~ 100kΩ in air

Sensitivity

(change ratio of Rs)

0.08~0.5

Rs (10ppm of EtOH)

Rs air

Standard test

conditions

Test gas conditions

normal air

at 20±2˚C, 65±5%RH

Circuit conditions

Vc = 5.0±0.01V DC

VH = 5.0±0.05V DC

Conditioning period

before test

7 days

RS = (

- 1) x RL

VRL

FIGARO ENGINEERING INC.

1-5-11 Senba-nishi

Mino, Osaka 562-8505 JAPAN

Tel: 81-72-728-2561

Fax: 81-72-728-0467

email: figaro@figaro.co.jp

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